from tkinter import *
print  ("Введите начальную координату X")
X = int(input())
    
print ("Введите начальную координату Y")
Y = int(input())
    
print ("Введите кооффициент увеличения N")
N = int(input())

coords=[0, 0, 10, 0, 10, 10, 20, 10, 20, 20, 0, 20]

if N == 0 and X>=0 and x<=500 and Y<=0 and Y<=500:
    pass
else:
    if N > 0 and 0*N+X>0 and 0*N+Y>=0 and 20*N+X<=500 and 20*N+Y<=500:
        pass
    else:
        if N < 0 and 20*N+x>0 and 20*N+Y>0 and 0*N+X<=500 and 0*N+Y<=500:
            pass
        else:
            print("Размер фигуры превышает максимальный размер поля")
            exit()
root = Tk()
root.title("IT Марафон")
root.geometry("500x500")

canvas = Canvas(bg="White", width=500, height=500)
canvas.pack(anchor=CENTER, expand=1)

canvas.create_polygon(coords[0] *N+X, coords[1] *N+X,
                      coords[2] *N+X, coords[3] *N+X,
                      coords[4] *N+X, coords[5] *N+X,
                      coords[6] *N+X, coords[7] *N+X,
                      coords[8] *N+X, coords[9] *N+X,
                      coords[10] *N+X, coords[11] *N+X)
root.mainloop()
